The task of Haiwa, the 12-year-old leader of the children's regiment, is to herd sheep and watch sentries to spot enemies and send signals to the villagers. Haiwa's father is a militia squadron leader. One day, his father asked him to send a "chicken-feather letter" to the Eighth Route Army about attacking enemy artillery towers. Haiwa used herding sheep as a cover to carry the letter on the road. Unexpectedly, they encountered enemies on the way... In desperation, they hid the letter under the sheep's tail and deceived the enemy. However, Haiwa, who was injured by the gunshot, endured the pain and continued to climb up the mountain, shouting loudly: "Uncle Eighth Route Army, hurry up." Fight the Japanese!"

Hearing the gunshots and Haiwa's shouts, Captain Zhang and the Eighth Route Army rushed forward and beat the Japanese to death. Finally, Captain Zhang handed the chicken-haired letter to Captain Zhang. According to the situation in the letter. Successfully destroyed the enemy's artillery tower, killed Commander Maoyan, and won a great victory.

Haiwa also became a young anti-Japanese hero because of his wit and bravery, and became a role model for our children to learn from.